Chaotify of semiconductor laser and its chaos adaptive control

n this paper, a semiconductor laser with 1.55 mu m is chaotified by adjusting its current at first. Then, the parameter adaptive control strategy is used to control the chaos in this laser system The advantage of anti-control and control of chaos strategy is that the desired stable output laser can be obtained in a short time and the output power strength of the laser can be adjusted flexibly in accordance with the engineering requirements. Theory analysis and simulation results show that the control method results in the powerful stability and robust. Our research results have very helpful values to improve the speed of stable output, flexible adjustment of laser output power as well as efficiency of energy transformation for real laser system.